The HKS Super Sequential Blowoff Valve (SSQV) is a dual stage pull type relief valve. Unlike other blow off valves that are push type, the SSQV will not leak under high boost conditions nor under vacuum at idle. Being of a pull type valve structure, the SSQV can not physically leak under any level of boost because boost pressure also keeps the valve closed against its seat. The SSQV is actuated by pressure alterations only, not by the rate of pressure or vacuum in the line, which ensures a quick valve response and complete closure during idle. On typical blow-off valve designs, a large valve is utilized in order to accommodate high boost / high horsepower applications. However, these large valves tend to react slowly and require high activation pressure to open, therefore are not able to activate and prevent compressor surge at light-load conditions. For Universal SSQV applications, weld-on flanges are available in steel and aluminum for custom installation.
I have this installed on my DSM, I believe it is the best blow off valve you can get for your car. It definitely makes the best sound hands down, looks the best, and will hold any amount of boost you can throw at it perfectly. Great buy!
I have this BOV on my Supra, ease of installation is great, the kit comes with the BOV already attached to a pipe. just remove the factory pipe and put this in hook up the vaccuum line and your done. great sound, easily adjustable and easily removed from pipe section in the kit for continued use once you get custom IC piping. all you have to do is get a new flange and have it welded in... Great but then can you really argue with HKS products?
supraross reviewed HKS Super Sequential BOV part # 1421-ST001
totally HKS quality. Sounds amazing, but makes my run a little rich...so, took it off the car until i can get a more custom tune on a dyno with it installed.
This BOV is on my father's 1989 TTA. It is a great BOV! It holds pressure perfectly and sounds really great! If was going to buy a new BOV for my Stealth it would be this one!
3spride reviewed HKS Super Sequential BOV part # 1421-SA001
I switched over from a greddy type-s to the hks unit due to it's ability to hold my desired boost levels(30 psi). It holds boost like a champ, due to it being a pull type valve as opposed to being a push type like the greddy. On the evo it will flutter under low boost situations but I have grown used to it. I would recommend it to anyone.
SLO EVO reviewed HKS Super Sequential BOV part # 1421-SA001
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Reviews of HKS Super Sequential BOV
